https://doi.org/10.1051/epjconf/201922301031
Heavy Ion Charge Exchange Reactions as Probes for Beta–Decay
1
Institut fur Theoretische Physik, Justus–Liebig–Universitat GieBen,
D–35392
GieBen
2
NUMEN Collaboration,
LNS Catania,
*
e-mail: horst.lenske@physik.uni-giessen.de
Published online: 4 December 2019
Peripheral heavy ion single and double charge reactions are described by fully quantum mechanical distorted wave methods. A special class of nuclear double charge exchange (DCE) reactions proceeding as a one-step reaction through a two-body process are shown to proceed by nuclear matrix elements of a diagrammatic structure as found also in 0ν2ß decay. These hadronic Majorana-type DCE reactions (MDCE) have to be distinguished from second order DCE reactions, given by double single charge exchange (DSCE) processes, resembling 2ν2ß decay. The theoretical concepts of MDCE are discussed. First results show that ion-ion DCE reactions are the ideal testing grounds for investigations of rare second order nuclear processes, giving insight into nuclear in-medium two-body correlation.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
